Our passports are always in my laptop tote that goes on every trip with us. If we're going somewhere we don't need our passports, I leave them on our coffee table in our family room until we get back when they immediately go back in the bag. I don't have to think, "now where did I put them"? I have always said, if we have our passports, at least we can get on the ship.
A few years ago, we were in Baltimore and had entered through the suite entrance where they feed you in after they check your paperwork to the security line. We were a couple of people back so we were waiting. An older couple came in the regular line and she starts frantically looking through her bag and he was getting angry with her and she was in tears. We could only assume they didn't have their passports or bc's. We didn't see how it played out as we went through security at that point and onto check in. We didn't see them again and since GR is such a small ship, we usually see a lot of the same people. It doesn't mean they didn't get onboard, but they were both really upset last we saw them.